CVE-2026-45880

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Source
https://cve.org/CVERecord?id=CVE-2026-45880
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45880.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-45880
Downstream
Related
Published
2026-05-27T12:16:52Z
Modified
2026-08-27T18:26:15Z
Summary
PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails
Details

In the Linux kernel, the following vulnerability has been resolved:

PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails

When vm_insert_page() fails in p2pmem_alloc_mmap(), p2pmem_alloc_mmap() doesn't invoke percpu_ref_put() to free the per-CPU ref of pgmap acquired after gen_pool_alloc_owner(), and memunmap_pages() will hang forever when trying to remove the PCI device.

Fix it by adding the missed percpu_ref_put().

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45880.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
7e9c7ef83d785236f5a8c3761dd053fae9b92fb8
Fixed
baa42b756d183a59572f3890981a3d32b8d05d40
Fixed
51b7181cfbedf289ce794b6d97a1c596c309ec38
Fixed
e19cce88ec4c4877f4ff2469099b9cf23cc3e93e
Fixed
a1f4dc72efc3204db95d052058d785cad7ce755f
Fixed
6220694c52a5a04102b48109e4f24e958b559bd3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45880.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.128
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.75
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.14
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45880.json"